If you are lucky enough to have either of the color codes for the wires shown below then just wire accordingly.
If you don't here is a easy way to find the correct wire for each of the sensors on the gearbox.
(a) With the key on (Engine off) move the gear selector to (R).
(b) Now take the (3) wires that are disconnected and touch each one separately to ground until the (R) lights on display.
(c) Mark that one (R) or (1).
(d) Now move the gear selector to (H).
(e) With the remaining two wires touch each one to ground until the (H) on the display lights.
(f) Mark that one (H) or (2).
(g) The remaining wire will obviously be (3) so mark accordingly.
(h) That is all there is to figuring out which wire is which.
